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WO2011061575A1 - Procédé pour la production de fluides hydrocarbures ayant une faible teneur en aromatiques - Google Patents

Procédé pour la production de fluides hydrocarbures ayant une faible teneur en aromatiques Download PDF

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Publication number
WO2011061575A1
WO2011061575A1 PCT/IB2009/056016 IB2009056016W WO2011061575A1 WO 2011061575 A1 WO2011061575 A1 WO 2011061575A1 IB 2009056016 W IB2009056016 W IB 2009056016W WO 2011061575 A1 WO2011061575 A1 WO 2011061575A1
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WO
WIPO (PCT)
Prior art keywords
fluids
sulphur
low
feed
less
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2009/056016
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English (en)
Inventor
François DALEMAT
Anne-Eline Gilles
Gildas Morvan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TotalEnergies Marketing Services SA
Original Assignee
Total Raffinage Marketing SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Total Raffinage Marketing SA filed Critical Total Raffinage Marketing SA
Priority to PCT/IB2009/056016 priority Critical patent/WO2011061575A1/fr
Priority to KR1020127015948A priority patent/KR101605786B1/ko
Priority to ES10803625.2T priority patent/ES2670228T3/es
Priority to RU2012120280/04A priority patent/RU2547658C2/ru
Priority to BR112012012095A priority patent/BR112012012095A2/pt
Priority to CN201080003591.8A priority patent/CN102858921B/zh
Priority to US13/510,908 priority patent/US9688924B2/en
Priority to PCT/IB2010/002966 priority patent/WO2011061612A2/fr
Priority to HK13102956.3A priority patent/HK1175492B/xx
Priority to EP10803625.2A priority patent/EP2501785B1/fr
Priority to TW099140204A priority patent/TWI484028B/zh
Publication of WO2011061575A1 publication Critical patent/WO2011061575A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
    • C10G45/44—Hydrogenation of the aromatic hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G65/00—Treatment of hydrocarbon oils by two or more hydrotreatment processes only
    • C10G65/02—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only
    • C10G65/04—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps
    • C10G65/08—Treatment of hydrocarbon oils by two or more hydrotreatment processes only plural serial stages only including only refining steps at least one step being a hydrogenation of the aromatic hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G45/00—Refining of hydrocarbon oils using hydrogen or hydrogen-generating compounds
    • C10G45/44—Hydrogenation of the aromatic hydrocarbons
    • C10G45/46—Hydrogenation of the aromatic hydrocarbons characterised by the catalyst used
    • C10G45/48—Hydrogenation of the aromatic hydrocarbons characterised by the catalyst used containing nickel or cobalt metal, or compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1037—Hydrocarbon fractions
    • C10G2300/1048—Middle distillates
    • C10G2300/1059—Gasoil having a boiling range of about 330 - 427 °C
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/201—Impurities
    • C10G2300/202—Heteroatoms content, i.e. S, N, O, P
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/20—Characteristics of the feedstock or the products
    • C10G2300/30—Physical properties of feedstocks or products
    • C10G2300/301—Boiling range
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4006—Temperature
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4012—Pressure
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4018—Spatial velocity, e.g. LHSV, WHSV
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/40—Characteristics of the process deviating from typical ways of processing
    • C10G2300/4081—Recycling aspects
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/18—Solvents

Definitions

  • the invention relates to the production of specific fluids having a narrow boiling range and having a very low aromatic content and their uses.
  • the invention relates to hydrogenation conditions.
  • Hydrocarbon fluids find widespread use as solvents such as in adhesives, cleaning fluids, explosives solvents for decorative coatings and printing inks, light oils for use in applications such as metalworking or demoulding and industrial lubricants, and drilling fluids.
  • the hydrocarbon fluids can also be used as extender oils in adhesives and sealant systems such as silicone sealants and as viscosity depressants in plasticised polyvinyl chloride formulations and as carrier in polymer formulation used as flocculants for example in water treatment, mining operations or paper manufacturing and also used as thickener for printing pastes.
  • Hydrocarbon fluids may also be used as solvents in a wide variety of other applications such as chemical reactions .
  • hydrocarbon fluids The chemical nature and composition of hydrocarbon fluids varies considerably according to the use to which the fluid is to be put. Important properties of hydrocarbon fluids are the distillation range generally determined by ASTM D-86 or the ASTM D-1160 vacuum distillation technique used for heavier materials, flash point, density, Aniline Point as determined by ASTM D- 611, aromatic content, sulphur content, viscosity, colour and refractive index. Fluids can be classified as paraffinic, isoparaffinic, dearomatised, naphthenic, non- dearomatised and aromatic.
  • US-A-4036734 discloses a process for converting aromatics into naphthenics.
  • the process comprises two hydrogenation stages.
  • the first hydrogenation stage is operated at a temperature from 204 to 315°C, a pressure from 6.9 to 103.5 bar, a liquid hourly space velocity of 0.5 to 10 hr _1 , and hydrogen treat rate of 0.034 to 0.34 Nm 3 /liter of feed.
  • the flow exiting the first stage comprises 3 ⁇ 4S which is disposed of and a solvent which is further hydrogenated in a second stage.
  • the first stage operates under hydrodesulphurisation conditions.
  • the second stage is operated at a temperature from 149 to 315°C, a pressure from 17.3 to 138 bar, a liquid hourly space velocity of 0.2 to 5 hr _1 , and a hydrogen treat rate of 0.08 to 0.51 Nm 3 /liter of feed
  • the final resulting fluid is said to have a boiling range which can be from 272°C to 401°C, and aromatics contents up to 4.3% by weight, the lowest value reported being 0.4% by weight. The lowest value is obtained for the solvent having the lowest boiling range.
  • WO-A-03/074634 and WO-A-03/074635 are both directed to the production of fluids comprising at least 40% naphthenics and a narrow boiling range.
  • the initial feed is a Vacuum Gas Oil (VGO) , that is then subjected to hydrocracking .
  • VGO Vacuum Gas Oil
  • a typical VGO is disclosed as having the following properties:
  • ASTM D-1160 distillation IBP 240-370°C, FBP 380- 610°C. (here ASTM D-1160 is used due to the high Final Boiling Point) ;
  • Aromatics wt% 1 ring from 13 to 27%, 2 rings from 10 to 20%, 3 rings from 7 to 11%, 4 rings from 6 to 12%, total from 40 to 65;
  • Naphthenes wt% 1 ring from 2 to 4%, 2 rings from 4 to 7%, 3 rings from 4 to 6%, 4 rings from 4 to 7%, total from 16 to 27;
  • Paraffins wt% from 7 to 16%
  • IsoParaffins wt% from 8 to 20%;
  • This VGO is then hydrocracked into a feedstock.
  • the feedstocks have low sulphur content, typically 1 to 15ppm by weight. These feedstocks have also a low aromatic content, typically 3 to 30 wt% (this is said to be lower than the typical range of 15 to 40 wt ⁇ 6 in conventional fluid manufacture) .
  • the lower sulphur content can avoid or reduce the need for deep hydrodesulphurisation and also results in less deactivation of the hydrogenation catalyst when hydrogenation is used to produce dearomatised grades.
  • the lower aromatic content also diminishes the hydrogenation severity required when producing dearomatised grades thus allowing the debott lenecking of existing hydrogenation units or allowing lower reactor volumes for new units.
  • the resulting products have a high naphthenics content, typically at least 40%, preferably at least 60%.
  • Hydrogenation of the hydrocracked VGO is said to be operated at a temperature of 200°C, a pressure of 27 bar, a liquid hourly space velocity of 1 hr -1 , and a treat rate of 200 Nm 3 /liter of feed. While these two documents indicate that the final product has a very low content in aromatics, the fact is that high boiling products still contain a high amount of aromatics.
  • the product having a boiling range of 237°C to 287°C is said to contain 42ppm of aromatics.
  • the three other products having higher boiling ranges (308 °C-342 °C, 305°C-364°C and 312°C-366°C) have aromatics contents of about 2000ppm.
  • EP1447437 discloses a process in which a first stream of hydrocarbons having an aromatics content of at least 70% is subjected to hydrodesulphurization so as to obtain a first stream with a sulphur content of less than 50ppm, and step of hydrogenation .
  • the first stream is said to have a distillation interval of 145-260°C, and the example provides for 142-234°C.
  • the hydrogenated stream can be fractionated, e.g. in light cuts of 100-205°C, middle cuts of 170-270°C and heavy cuts of 200-400°C. Yet, in the sole example, there is no fractionation taking place.
  • WO01/083640 discloses that some specific cuts are gas oil cuts resulting from hydrocracking petroleum loads with the gas oil cuts undergoing a forced hydrogenation stage to eliminate aromatic compounds followed by fractionation.
  • the invention thus aims at providing a process for making products having a very low content in aromatics, typically below lOOppm, and this even for products having an Initial Boiling Point above 300°C, especially for aliphatic (paraffinic and naphthenic) fluids.
  • the invention provides a process for hydrogenating a low-sulphur feed into very low sulphur and very low aromatic hydrocarbon fluids having a boiling range in the range of from 100 to 400°C and a boiling range of not more than 80°C, comprising the step of catalytically hydrogenating said feed at a temperature from 80 to 180°C and at a pressure from 60 to 160 bars.
  • the fluids contain less than lOOppm aromatics, preferably less than 50ppm, and more preferably less than 30ppm.
  • the fluids have a boiling range in the range 150 to 400°C, preferably from 200 to 400°C.
  • the fluids have a boiling range below 75°C and preferably between 40 and 50°C.
  • the fluids have a sulphur content of less than 5ppm, preferably less than 3ppm, most preferably less than 0.5ppm.
  • liquid hourly space velocity is from 0.2 to 5hr _1 .
  • the treat rate is from 100 to 300 Nm 3 /ton of feed.
  • the catalyst comprises nickel supported on alumina carrier having specific surface area varying between 30 and 45 mm 2 /g of catalyst.
  • the process comprises three hydrogenation stages.
  • the the amount of catalyst in the three hydrogenation stages can be according to the scheme 0.05-0.5/0.10-0.70/0.25-0.85, for example 0.07- 0.25/0.15-0.35/0.4-0.78 and most preferably 0.10- 0.20/0.20-0.32/0.48-0.70.
  • the first reactor is a trap reactor.
  • the low-sulphur feed contains less than 15ppm sulphur, preferably less than 8ppm and more preferably less than 5ppm.
  • the low-sulphur feed contains less than 70% aromatics, preferably less than 30%.
  • the low-sulphur feed contains more than 20% aromatics, preferably more than 30%.
  • the low-sulphur feed is hydrocracked vacuum gas oil, optionally in admixture with FCC effluents and/or hydrotreated atmospheric distillate.
  • the process further comprises a separation stage, whereby unreacted hydrogen is recovered and a stream of hydrogenated product is recovered, and preferably recycled to the inlet of the process.
  • the unreacted hydrogen can be recycled at least in part, to the inlet of the process.
  • the stream of hydrogenated product can be recycled at least in part, to the inlet of the process.
  • the separation stage can comprise three separators staged according to decreasing pressure. The pressure in the last separator can be about atmospheric pressure.
  • the process further comprises a step of prefractionat i on of the low-sulphur feed prior to hydrogenation, into fractions having a boiling range of less than 90°C.
  • the process further comprises a step of fractionation of the hydrogenated products into fluids of defined boiling ranges.
  • the fractionation step can be carried out at a vacuum pressure from 10 to 50 mbars absolute.
  • the invention provides fluids having:
  • a p o 1 y n ap h t he n i c content below 40%wt, especially below 30% and even below 20%, and/or a paraffinic content above 30%wt, especially above 40% and even above 50%; and/or
  • the invention further provides the use of the fluids obtained by the process of the invention as drilling fluids, as industrial solvents, in coating fluids, in explosives, in concrete demoulding formulations, in adhesives, in printing inks, in metal working fluids, as cutting fluids, as rolling oils, as EDM fluids, rust preventive in industrial lubricants, as extender oils, in sealants or polymers formulation with silicone, as viscosity depressants in plasticised polyvinyl chloride formulations, in resins, as crop protection fluids, in pharmaceutical products, in paint compositions, in polymers used in water treatment, paper manufacturing or printing pastes and cleaning solvents.
  • the attached drawing is a schematic representation of a unit used in the invention.
  • the invention provides specific hydrogenation conditions of low-sulphur feeds.
  • the low-sulphur feed typically contains less than 15ppm of sulphur, but higher amounts can be processed, for example up to 30ppm. Lower values are preferred. There is no limit for the lower value; generally the sulphur content is at least lppm. Hence, a typical low- sulphur feed will comprise 1 to 15ppm sulphur.
  • the feed can be of any type, including feed having a high aromatic content.
  • a typical feed will correspond to hydrocraked VGO, comprising typically 3 to 30 wt% aromatics. Higher aromatics content can be processed, up to 100%, like feed such as desulphurized light Cycle Oil (LCO) .
  • LCO desulphurized light Cycle Oil
  • a preferred feed is hydrocracked VGO.
  • hydrocracking processes may be found in Hydrocarbon Processing of November 1996 pages 124 to 128, hydrocracking science and technology, 1996, US4347124, US4447315, WO-A- 99/47626
  • the feed can be of the light diesel type, heavy diesel type or jet type.
  • a prefractionation can take place before entering the h y d r o g e n a t i o n unit. Having a more narrow boiling range entering the unit allows having a more narrow boiling range at the outlet. Typical boiling ranges of prefractionated cuts are 150°C to 220°C, 220 to 310°C.
  • the feed is then hydrogenated .
  • Hydrogen that is used in the hydrogenation unit is typically a high purity hydrogen, e.g. with a purity of more than 99%, albeit other grades can be used.
  • Hydrogenation takes place is one or more reactor.
  • the reactor can comprise one or more catalytic beds.
  • Catalytic beds are usually fixed beds.
  • Hydrogenation takes place using a catalyst.
  • Typical hydrogenation catalysts include but are not limited to: nickel, platinum, palladium, rhenium, rhodium, nickel tungstate, nickel molybdenum, molybdenum, cobalt molybdenate, nickel molybdenate on silica and/or alumina carriers or zeolithes.
  • a preferred catalyst is Ni-based and supported on an alumina carrier, having a specific area varying between 30 And 45 mm 2 /g of catalyst.
  • the hydrogenation conditions are typically the following :
  • Pressure 60 to 160 bars, preferably 100 to 150 bars, and most preferably 115 to 140 bars
  • Temperature 80 to 180°C, preferably 120 to 160°C and most preferably 130 to 150°C
  • Liquid hourly space velocity (LHSV) 0,2 to 5 hr -1 , preferably 0.5 to 3, and most preferably 0.8 to 1.5
  • Hydrogen treat rate 100 to 300 Nm 3 /ton of feed, preferably 150 to 250 and most preferably 160 to 200.
  • the process of the invention can be carried out in several stages. There can be two or three stages, preferably three stages.
  • the first stage will operate the sulphur trapping, hydrogenation of substantially all insaturates, and up to about 90% of hydrogenation of aromatics.
  • the flow exiting from the first reactor contains substantially no sulphur.
  • the hydrogenation of the aromatics continues, and up to 99% of aromatics are hydrogenated .
  • the third stage is a finishing stage, allowing aromatics contents as low as lOOppm or even less such as below 50ppm or even below 30ppm, even for high boiling products.
  • the catalysts can be present in varying or substantially equal amounts in each reactor, e.g. for three reactors according to weight amounts of 0.05- 0.5/0.10-0.70/0.25-0.85, preferably 0.07-0.25/0.15- 0.35/0.4-0.78 and most preferably 0.10-0.20/0.20- 0.32/0.48-0.70.
  • the first reactor be made of twin reactors operated alternatively in a swing mode. This made be useful for catalyst charging and discharging: since the first reactor comprises the catalyst that is poisoned first (substantially all the sulphur is trapped in and/or on the catalyst) it should be changed often.
  • One reactor can used, in which two, three or more catalytic beds are installed. It may be necessary to insert quenches on the recycle to cool effluents between the reactors or catalytic beds to control reaction temperatures and consequently hydrothermal equilibrium of the hydrogenation reaction. In a preferred embodiment, there is no such intermediate cooling or quenching.
  • the first reactor will act as a sulphur trap, especially for benzo and di benzothiophens and their derivatives considered as the most refractory sulphur compounds present in refined hydrocarbons.
  • This first reactor will thus trap substantially all the sulphur.
  • the catalyst will thus be saturated very quickly and may be renewed from time to time.
  • regeneration or rejuvenation is not possible for such saturated catalyst the first reactor is considered as a sacrificial reactor which size and catalyst content depend on catalyst renewal frequency .
  • the resulting product and/or separated gas is/are at least partly recycled to the inlet of the hydrogenation stages.
  • This dilution helps maintaining the exothermicity of the reaction within controlled limits, especially at the first stage. Recycling also allows heat-exchange before the reaction and also a better control of the temperature.
  • the stream exiting the hydrogenation unit contains the hydrogenated product and hydrogen.
  • Flash separators are used to separate effluents into gas, mainly remaining hydrogen, and liquids, mainly hydrogenated hydrocarbons.
  • the process can be carried out using three flash separators, one of high pressure, one of medium pressure, and one of low pressure, very close to atmospheric pressure .
  • the hydrogen gas that is collected on top of the flash separators can be recycled to the inlet of the hydrogenation unit or at different levels in the hydrogenation units between the reactors. Because the final separated product is at about atmospheric pressure, it is possible to feed directly the fractionation stage, which is preferably carried out under vacuum pressure that is at about between 10 to 50mbars, preferably about 30 mbars .
  • the fractionation stage can be operated such that various hydrocarbon fluids can be withdrawn simultaneously from the fractionation column, and the boiling range of which can be predetermined.
  • the hydrogenation reactors, the separators and the fractionation unit can thus be connected directly, without having to use intermediate tanks, as is usually the case in the prior art documents.
  • By adapting the feed, especially the initial and final boiling points of the feed it is possible to produce directly, without intermediate storage tanks, the final products with the desired initial and final boiling points.
  • this integration of hydrogenation and fractionation allows an optimized thermal integration with reduced number of equipment and energy savings.
  • the complete unit comprises an hydrogenation unit 10, a separation unit 20 and a fractionation unit 30.
  • the hydrogenation unit comprises here three reactors
  • Line 4 contains the recycled stream.
  • the recycled stream still comprises hydrogen. This is combined with the source of hydrogen and feed, and will eventually flow through line 1.
  • a heat exchanger 6 is used to adjust the temperature of the mixture entering the hydrogenation unit .
  • the temperature in the reactors is typically about 150-160°C and the pressure is typically about 140 bars while the liquid hourly space velocity is typically about 0.8 and the treat rate is typically about 100 to 180 Nm 3 /ton of feed, depending on the feed quality.
  • the stream exiting the hydrogenation section 10 will enter the first flash separator, the stream out of the first separator is partly recycled and partly sent to the second separator.
  • This recycle ratio is between 2 and 20 typically about 4 to about 5.
  • the first flash separator is a high pressure separator, operated at a pressure ranging e.g. from about 60 to about 160 bars, preferably from about 100 to about 150 bars, and especially at about 130-140 bars.
  • the second flash separator 22 is a medium pressure separator, operated at a pressure ranging e.g. from about 10 to about 40 bars, preferably from about 20 to about 30 bars, and especially at about 27 bars.
  • This third separator is preferably operated at a pressure ranging e.g. from about 0.5 to 5 bars, preferably from about 0.8 to about 2 bars, and especially at about atmospheric pressure.
  • a flow of product free of hydrogen is withdrawn through line 7 and sent directly to the fractionation column .
  • the fractionation column 31 is preferably operated under vacuum pressure, such as about 30 mBars absolute.
  • the temperature profile of the column is set depending of the boiling properties of the products to be recovered.
  • Different streams 32a, 32b, 32c, 32d can be withdrawn from top to bottom of the column, including at lateral, intermediate, levels.
  • the final products are then sent to storage.
  • the fluids produced according to the invention possess outstanding properties, in terms of aniline point or solvency power, molecular weight, vapour pressure, viscosity, defined evaporation conditions for systems where drying is important, and defined surface tension.
  • the fluids produced according to the invention also present an enhanced safety, due to the very low aromatics content, less than lOOppm, typically less than 50ppm, and preferably less than 30ppm. This makes them suitable for use in crop protection fluids as well as pharmacological products. This is especially useful for high boiling products, typically products boiling in the range 300- 400°C,n preferably 320-380°C.
  • the boiling range of the final product is preferably not more than 75°C, preferably not more than 65°C, more preferably not more than 50°C.
  • the fluids of the present invention also have an extremely low sulphur content less than 0,5ppm, at level too low to be detected by the usual low-sulphur analyzers .
  • the fluids produced by the present invention have a variety of uses for example in drilling fluids, in industrial solvents, in paints composition, in explosives, in printing inks and in metal working fluids, such as cutting fluids, EDM (electro discharge machining) fluids, rust preventives, coating fluids and aluminium rolling oils, and in concrete demoulding formulations. They can also be used in industrial lubricants such as shock absorbers, insulation oils, hydraulic oils, gear oils, turbine oils, textile oils and in transmission fluids such as automatic transmission fluids or manual gear box formulations. In all this foreseen uses, the Initial Boiling Point to Final Boiling Point range are selected according to the particular use and composition.
  • the fluids are also useful as components in adhesives, sealants or polymer systems such as silicone sealant, modified silane polymers where they act as extender oils and as viscosity depressants for PVC pastes or Plastisol formulations .
  • the fluids produced according to the present invention may also be used as new and improved solvents, particularly as solvents for resins.
  • the solvent-resin composition may comprise a resin component dissolved in the fluid, the fluid comprising 5 to 95% by total volume of the composition.
  • the fluids produced according to the present invention may be used in place of solvents currently used for inks, coatings and the like.
  • the fluids produced according to the present invention may also be used to dissolve resins such as: a) acrylic-thermoplastic; b) acrylic-thermosetting; c) chlorinated rubber; d) epoxy (either one or two part) ; e) hydrocarbon (e.g., olefins, terpene resins, rosin esters, petroleum resins, coumarone-indene, styrene-butadiene, styrene, methyl-styrene, vinyl-toluene, polychloroprene, polyamide, polyvinyl chloride and isobutylene) ; f ) phenolic; g) polyester and alkyd; h) polyurethane and modified polyurethane; i) silicone and modified silicone (MS polymers); j) urea; and, k) vinyl polymers and polyvinyl acetate.
  • resins such as: a) acrylic-thermoplastic; b) acrylic-
  • the fluids and fluid-resin blends examples include coatings, cleaning compositions and inks.
  • the blend preferably has a high resin content, i.e., a resin content of 20% to 80% by volume.
  • the blend preferably contains a lower concentration of the resin, i.e., 5%-30% by volume.
  • various pigments or additives may be added.
  • the fluids produced by the present invention can be used as cleaning compositions for the removal of hydrocarbons
  • the fluids may also be used in cleaning compositions such as for use in removing ink, more specifically in removing ink from printing.
  • the cleaning compositions are environmentally friendly in that they contain no or hardly any aromatic volatile organic compounds and/or halogen containing compounds.
  • a further trend is that the compositions fulfil strict safety regulations. In order to fulfil the safety regulations, it is preferred that the compositions have a flash point of more than 62°C, more preferably a flash point of 90°C or more. This makes them very safe for transportation, storage and use.
  • the fluids produced according to the present invention have been found to give a good performance in that ink is readily removed while these requirements are met.
  • the fluids produced according to this invention are also useful as drilling fluids, such as a drilling fluid which has the fluid of this invention as a continuous oil phase.
  • the fluid may also be used as a rate of penetration enhancer comprising a continuous aqueous phase containing the fluid produced according to this invention dispersed therein.
  • Fluids used for offshore or on-shore applications need to exhibit acceptable biodegradability, human, eco- toxicity, eco-accumu 1 a t i on and lack of visual sheen credentials for them to be considered as candidate fluids for the manufacturer of drilling fluids.
  • fluids used in drilling uses need to possess acceptable physical attributes. These generally include a viscosity of less than 4.0 mm 2 /s at 40°C, a flash value of less than 100°C and, for cold weather applications, a pour point at -40°C or lower. These properties have typically been only attainable through the use of expensive synthetic fluids such as hydrogenated polyalphaolefins , as well as unsaturated internal olefins and linear alpha- olefins and esters.
  • Drilling fluids may be classified as either water- based or oil-based, depending upon whether the continuous phase of the fluid is mainly oil or mainly water.
  • Water- based fluids may however contain oil and oil-based fluids may contain water and the fluids produced according to this invention are particularly useful as the oil phase.
  • ASTM D-86 boiling ranges for the uses of the fluids are that printing ink solvents (sometimes known as distillates) have boiling ranges in the ranges 235°C to 265°C, 260°C to 290°C, 280°C to 315°C and 300°C to 355°C.
  • Fluids preferred for use as drilling fluids have boiling ranges in the ranges 195°C to 240°C, 235°C to 265°C and 260°C to 290°C.
  • Fluids preferred as viscosity depressants for polyvinyl chloride plastisols have boiling ranges in the ranges 185°C to 215°C, 195°C to 240°C, 235°C to 265°C, 260°C to 290°C, 280°C to 315°C and 300°C to 360°C.
  • Fluids preferred as carrier for polymeric composition used in water treatment, mining operation or printing pastes have boiling ranges in the ranges 185°C to 215°C, 195°C to 240°C, 235°C to 265°C, 260°C to 290°C, 280°C to 315°C and 300°C to 360°C.
  • Fluids preferred for crop protection application have boiling ranges in intervals between 300 and 370°C, such fluids being used in combination with hydrocarbon fluids such as isodewaxed hydrocarbons or any hydrocarbons having comparable properties such as viscosity.
  • fluids For Pharmacological application, fluids have boiling ranges in intervals between 275°C to 330°C, 290°C to 380°C and 300 to 370°C. For paint compositions and cleaning applications, the most preferred boiling range are in intervals 140 to 210°C, and 180 to 220°C. Fluids showing an initial boiling point above 250°C and a final boiling point close to 330°C or preferably close to 290°C will be preferred for low VOC coatings formulations.
  • the aim of the present example is to describe the preparation of hydrocarbon fluids according to the present invention and comparison with hydrocarbon fluids prepared according to the prior art such as those obtained by hydr ogena t i on of hydrocracked vacuum distillate such as disclosed in patent applications WO03/074634 and/or WO03/074635.
  • Hydrocarbons fluids obtained according to this prior art were obtained by hydrocracking vacuum distillate (in the boiling range between 180°C a 450°C, containing 45% in weight aromatics) under pressure of 142 a 148 bars within two reactors, at 378 and 354°C respectively in presence of a catalyst.
  • the hydrocracked vacuum distillate shows a sulphur content between 3 and 8 ppm and an aromatic content between 3 et 30% weight.
  • the hydrocracked distillate is hydrogenated under pressure of 2700 kPa, at 200°C with a liquid hourly space velocity (LHSV) of 1 hour -1 , the ratio hydrogen flow to liquid flow being equal to 200Nm 3 /l.
  • LHSV liquid hourly space velocity
  • the dearomatized desulphurized distillate is fractionated into cuts Ti of intervals of boiling temperature of 65°C. The characteristics of these cuts are given in table 1 hereafter.
  • a hydrocracked middle distillate having less than 1 ppm sulphur content and between 1 to 20% aromatics has been hydrogenated over a nickel hydrogenating catalyst under pressure of 105 bars, at a liquid hourly space velocity (LHSV) of 1 h -1 , and at a temperature between 155 and 160°C according to 5 the invention through units and process disclosed here over within three reactors.
  • LHSV liquid hourly space velocity
  • the resulting hydrogenating desulphurized distillate is fractionated in cuts Di having boiling temperature range of less than 65°C. Characteristics of these cuts and real distillation 10 yields are given in table 1 hereafter.
  • the products according to the invention are free of sulphur and present very low aromatic content the aromatic content of the products according to the invention is much lower than those of the prior art (less than lOOppm instead of about 2000ppm for the highest boiling ranges)
  • compositions in terms of isoparaffins and naphthens are different.

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  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

La présente invention concerne un procédé pour hydrogéner une charge pauvre en soufre dans des fluides hydrocarbures très pauvres en soufre et très pauvres en aromatiques ayant une plage de point d'ébullition dans la plage de 100 à 400 °C et une plage de point d'ébullition de pas plus de 80 °C, comprenant l'étape d'hydrogénation catalytique de ladite charge à une température de 80 à 180 °C et à une pression de 60 à 160 bars.
PCT/IB2009/056016 2009-11-20 2009-11-20 Procédé pour la production de fluides hydrocarbures ayant une faible teneur en aromatiques Ceased WO2011061575A1 (fr)

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PCT/IB2009/056016 WO2011061575A1 (fr) 2009-11-20 2009-11-20 Procédé pour la production de fluides hydrocarbures ayant une faible teneur en aromatiques
KR1020127015948A KR101605786B1 (ko) 2009-11-20 2010-11-19 방향족 함량이 낮은 탄화수소 유체의 생성방법
ES10803625.2T ES2670228T3 (es) 2009-11-20 2010-11-19 Procedimiento para la producción de fluidos hidrocarbonados que tienen un bajo contenido en compuestos aromáticos
RU2012120280/04A RU2547658C2 (ru) 2009-11-20 2010-11-19 Способ получения углеводородных жидкостей с низким содержанием ароматических соединений
BR112012012095A BR112012012095A2 (pt) 2009-11-20 2010-11-19 processo para a produção de fluidos de hidrocarbonetos tendo um baixo teor aromático
CN201080003591.8A CN102858921B (zh) 2009-11-20 2010-11-19 具有低芳族含量的烃流体的生产方法
US13/510,908 US9688924B2 (en) 2009-11-20 2010-11-19 Process for the production of hydrocarbon fluids having a low aromatic content
PCT/IB2010/002966 WO2011061612A2 (fr) 2009-11-20 2010-11-19 Procédé de production de fluides hydrocarbonés ayant une faible teneur aromatique
HK13102956.3A HK1175492B (en) 2009-11-20 2010-11-19 Process for the production of hydrocarbon fluids having a low aromatic content
EP10803625.2A EP2501785B1 (fr) 2009-11-20 2010-11-19 Procédé de production de fluides hydrocarbonés ayant une faible teneur aromatique
TW099140204A TWI484028B (zh) 2009-11-20 2010-11-22 製造具有低含量芳香族之烴流體的方法

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WO2019229331A1 (fr) 2018-05-29 2019-12-05 Total Marketing Services Composition de carburant et procede de fonctionnement d'un moteur a combustion interne
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EP2501785B1 (fr) 2018-04-25
BR112012012095A2 (pt) 2018-03-20
HK1175492A1 (en) 2013-07-05
WO2011061612A3 (fr) 2012-01-05
TW201134935A (en) 2011-10-16
ES2670228T3 (es) 2018-05-29
WO2011061612A2 (fr) 2011-05-26
CN102858921A (zh) 2013-01-02
RU2012120280A (ru) 2013-12-27
KR20120114272A (ko) 2012-10-16
RU2547658C2 (ru) 2015-04-10
US20120283492A1 (en) 2012-11-08
TWI484028B (zh) 2015-05-11
CN102858921B (zh) 2014-10-22
EP2501785A2 (fr) 2012-09-26
KR101605786B1 (ko) 2016-03-23
US9688924B2 (en) 2017-06-27

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